I'm amazed how people are STILL arguing about what counterpicks should be banned or unbanned. Like I've said a million times:
Counterpicks are inherently an uncompetitive way to choose stages.
Allowing counterpicks makes games less fair; that is WHY they are considered counterpicks. Arguing for a bunch of legal stages with a bunch of stage bans is not only pointless because they will be banned all the time anyway, but it isn't fair anyway. If all the stages were legal and each player had a **** ton of bans, Fox would easily dominate because he has more stages that he can win easily on than other characters (walls to shine against, walk-offs to get waveshine kills, etc.).
Do people understand why stages like Mute City and Corneria are banned? It is because they are so unfair for certain characters that it basically forces players to waste their ban on it. None of the neutrals (BF, DL, FD, FoD, and even PS, and sometimes KJ) are so bad that they are instant banned. Obviously some matchups have insta-bans (Falco vs. Marth, I ban FD every time, no questions asked), but for most matchups these stages can ben considered an advantage either way. I have seen Peach players counterpick DL against Falcos, and I have also seen them ban and strike it vs. Falcos. Which neutral is the best decision is heavily based on personal preference and specific playstyle issues (a Peach may counterpick a Fox to YS if they are really campy and utilize gimps but bad at killing off the top). Stages outside of the core neutrals are VERY matchup dependent and have little variability in whose advantage they will be in.
I'm starting to ramble, so I'll just end with this point:
There is no point adding stages in if they will be banned 99% of matches anyway. The goal of striking and bannings is to ensure players play on the most fair and evenly matched stages available. Anything beyond that will only serve to make sets a best of 1 as the first match will be fair, but the second and third will just be easy wins in either player's favor.